
The updated measurement of \(R_K\)  in Moriond 2021 which is \(0.846^{+0.044}_{-0.041}\)  [1]}.

The measurement of \(R_{K^*}\)  in the two different \(q^2\)  bins by the LHCb collaboration. The value of
\(R_{K^*}^{\rm exp}\)  in \(0.045 \le q^2 \le 1.1 ~{\rm GeV}^2\)  and \(1.1 \le q^2 \le 6.0 ~{\rm GeV}^2\)  bins are \(0.660^{+0.110}_{-0.070}~ \pm 0.024\)  and \(0.685^{+0.113}_{-0.069}~ \pm 0.047\) , respectively. The ratio \(R_{K^*}\)  was also measured by the Belle Collaboration in both \(B^0\)  and \(B^+\)  decays [2]}. We include these measurements in the bins \(0.045 \,{\rm GeV}^{2}< q^2 < 1.1\, {\rm GeV}^2, \, 1.1 \,{\rm GeV}^{2}< q^2 < 6.0\, {\rm GeV}^2, \)  and \(15.0\, {\rm GeV}^{2}< q^2 < 19.0\, {\rm GeV}^2\) .

We also include the measurement of the ratios \(R_{K_S ^0}\)  and \(R_{K^{*+}}\)  by the LHCb collaboration [3]}. The measured values are \(R_{K_S ^0}^{\rm exp} = 0.66^{+0.20+0.02}_{-0.14 - 0.04}\)  and
\(R_{K^{*+}}^{\rm exp} = 0.70^{+0.18+0.03}_{-0.13 - 0.04}\) 
in the \(1.1\, {\rm GeV}^2 \le q^2 \le 6.0 \, {\rm GeV}^2\)  region.

